Which statement about dinosaurs is FALSE?
a. Some species lived in social groups and hunted in packs.
b. Dinosaurs were all slow-moving, with relatively low metabolic rates.
c. Fossils of dinosaurs with feathers suggest that feathers first evolved to provide insulation.
d. Dinosaur social behaviors include courtship rituals and parental nurturing of the young.
e. Dinosaurs underwent an extensive radiation throughout the Jurassic and Cretaceous periods
b
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Which of the following factors would result in the allele frequency of a population not adding up to 1.0, as is the case in the Hardy-Weinberg rule?
A. Genetic drift B. Inbreeding C. A population changing due to selection D. None of the answers, the allele frequencies must always equal 1.0
What is the intensity of that color?
a. 25 b. 50 c. 75 d. 100
In prophase I of spermatogenesis, there are ____ chromatids
a. 92 b. 23 c. 46 d. half as many (as in somatic cells) e. twice as many (as compared to mature sperm)
Which genera is included in the ciliates group?
a. Entamoeba b. Paramecium c. Trichomonas d. Anopheles